System.Reflection.AmbiguousMatchException 正在解析 json

Question

不幸的是，我对 C# 的经验为零，但我需要在 SSIS 中创建 JSON 源代码。

我正在尝试下载 JSON、反序列化并将其保存到列表：

public override void CreateNewOutputRows()
{
    JavaScriptSerializer serialize = new JavaScriptSerializer();

    var employees = new List<Employees>();

    employees = serialize.Deserialize<List<Employees>>(json);


    foreach (var record in employees)
    {
        Output0Buffer.AddRow();

        Output0Buffer.FirstName = record.FirstName;
        Output0Buffer.EmailId = record.EmailID;
        Output0Buffer.Profile = record.Profile;
        Output0Buffer.EmployeeIDInternal = record.EmployeeIDInternal;
        Output0Buffer.LastName = record.LastName;
    }
}

员工是：

public class Employees
{
    public string FirstName { get; set; }
    public string EmailID { get; set; }
    public string Profile { get; set; }
    public string EmployeeIDInternal { get; set; }
    public string LastName { get; set; }
}

但失败并出现以下错误：

System.Reflection.AmbiguousMatchException
  HResult=0x8000211D
  Message=Ambiguous match found.
  Source=mscorlib

更新： @OlivierJacot-Descombes 我无法向您展示原始 json，但我通过从序列化器创建 json 尝试了 JavaScriptSerializer 方法文档中的方法：

var RegisteredUsers = new List<Employees>();
RegisteredUsers.Add(new Employees() { FirstName = "Name1", EmailID = "abc@gmail.com", Profile = "DB", EmployeeIDInternal = "123", LastName = "Surname1" });
RegisteredUsers.Add(new Employees() { FirstName = "Name2", EmailID = "abc1@gmail.com", Profile = "DB1", EmployeeIDInternal = "1234", LastName = "Surname2" });
RegisteredUsers.Add(new Employees() { FirstName = "Name3", EmailID = "abc234@gmail.com", Profile = "SQL", EmployeeIDInternal = "77", LastName = "Surname3" });
RegisteredUsers.Add(new Employees() { FirstName = "Name4", EmailID = "absdfsc@gmail.com", Profile = "", EmployeeIDInternal = "555", LastName = "Surname4" });

var serializer = new JavaScriptSerializer();
var serializedResult = serializer.Serialize(RegisteredUsers);


var employees = serializer.Deserialize<List<Employees>>(serializedResult);

它生成以下 json 文本（原始文本在一行文本上未格式化）：

[
   {
      "modifiedTime":null,
      "Addedtime":null,
      "FirstName":"Name1",
      "EmailID":"abc@gmail.com",
      "Photo":null,
      "HRSpecialist":null,
      "AddedBy":null,
      "Gender":null,
      "ApprovalStatus":null,
      "Profile":"DB",
      "CarNumberPlate":null,
      "recordId":null,
      "ModifiedBy":null,
      "Department":null,
      "EmployeeIDInternal":"123",
      "Modifiedtime":null,
      "ownerName":null,
      "createdTime":null,
      "TechnicalLevel":null,
      "Room":null,
      "Tags":null,
      "Photo_downloadUrl":null,
      "ReportingTo":null,
      "FirstProject":null,
      "Designation":null,
      "IM":null,
      "WorkLocation":null,
      "ownerID":null,
      "MaritalStatus":null,
      "DateofJoining":null,
      "IMServiceProvider":null,
      "CompetenceLead":null,
      "DateofBirth":null,
      "LastName":"Surname1",
      "EmployeeID":null,
      "MobilePhone":null,
      "Expertise":null,
      "Location":null
   },
   {
      "modifiedTime":null,
      "Addedtime":null,
      "FirstName":"Name2",
      "EmailID":"abc1@gmail.com",
      "Photo":null,
      "HRSpecialist":null,
      "AddedBy":null,
      "Gender":null,
      "ApprovalStatus":null,
      "Profile":"DB1",
      "CarNumberPlate":null,
      "recordId":null,
      "ModifiedBy":null,
      "Department":null,
      "EmployeeIDInternal":"1234",
      "Modifiedtime":null,
      "ownerName":null,
      "createdTime":null,
      "TechnicalLevel":null,
      "Room":null,
      "Tags":null,
      "Photo_downloadUrl":null,
      "ReportingTo":null,
      "FirstProject":null,
      "Designation":null,
      "IM":null,
      "WorkLocation":null,
      "ownerID":null,
      "MaritalStatus":null,
      "DateofJoining":null,
      "IMServiceProvider":null,
      "CompetenceLead":null,
      "DateofBirth":null,
      "LastName":"Surname2",
      "EmployeeID":null,
      "MobilePhone":null,
      "Expertise":null,
      "Location":null
   },
   {
      "modifiedTime":null,
      "Addedtime":null,
      "FirstName":"Name3",
      "EmailID":"abc234@gmail.com",
      "Photo":null,
      "HRSpecialist":null,
      "AddedBy":null,
      "Gender":null,
      "ApprovalStatus":null,
      "Profile":"SQL",
      "CarNumberPlate":null,
      "recordId":null,
      "ModifiedBy":null,
      "Department":null,
      "EmployeeIDInternal":"77",
      "Modifiedtime":null,
      "ownerName":null,
      "createdTime":null,
      "TechnicalLevel":null,
      "Room":null,
      "Tags":null,
      "Photo_downloadUrl":null,
      "ReportingTo":null,
      "FirstProject":null,
      "Designation":null,
      "IM":null,
      "WorkLocation":null,
      "ownerID":null,
      "MaritalStatus":null,
      "DateofJoining":null,
      "IMServiceProvider":null,
      "CompetenceLead":null,
      "DateofBirth":null,
      "LastName":"Surname3",
      "EmployeeID":null,
      "MobilePhone":null,
      "Expertise":null,
      "Location":null
   },
   {
      "modifiedTime":null,
      "Addedtime":null,
      "FirstName":"Name4",
      "EmailID":"absdfsc@gmail.com",
      "Photo":null,
      "HRSpecialist":null,
      "AddedBy":null,
      "Gender":null,
      "ApprovalStatus":null,
      "Profile":"",
      "CarNumberPlate":null,
      "recordId":null,
      "ModifiedBy":null,
      "Department":null,
      "EmployeeIDInternal":"555",
      "Modifiedtime":null,
      "ownerName":null,
      "createdTime":null,
      "TechnicalLevel":null,
      "Room":null,
      "Tags":null,
      "Photo_downloadUrl":null,
      "ReportingTo":null,
      "FirstProject":null,
      "Designation":null,
      "IM":null,
      "WorkLocation":null,
      "ownerID":null,
      "MaritalStatus":null,
      "DateofJoining":null,
      "IMServiceProvider":null,
      "CompetenceLead":null,
      "DateofBirth":null,
      "LastName":"Surname4",
      "EmployeeID":null,
      "MobilePhone":null,
      "Expertise":null,
      "Location":null
   }
]

Answer 1

Employees class 的属性或字段似乎比您向我们展示的要多得多。

在您的 JSON 文本中，我看到每条记录有两个相似的条目：

"modifiedTime":null,                                field #1
"Modifiedtime":null,                                field #16

它们只是通过字母大小写来区分的。它们很可能是 System.Reflection.AmbiguousMatchException 的起源。重命名其中之一或删除其中之一。

一个可能是属性而另一个是字段。参见：How to exclude property from Json Serialization

System.Reflection.AmbiguousMatchException 正在解析 json

System.Reflection.AmbiguousMatchException while parsing json

c#

json

ssis